Check Engine Light Keeps Coming On - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 11-11-2011, 05:48 AM Thread Starter
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Check Engine Light Keeps Coming On

I'm sure this question has been asked and answered a million times, but maybe you guys can save me a lot of digging for answers. Here's what's hapenening. I've had the truck exactly two weeks and the check engine light has come on 3 times. The first time it came on was two days after I bought the truck. I took it right back to the dealer who put it on the computer which indicated a DPF pressure sensor. He changed it, but the light came back on the next day. That was on a Sunday so I was going to go back to the dealer the next morning. However, when I went to start the truck the next morning, the light went off and stayed off until last night (two weeks). What I did next was probably stupid, but I wanted to try it and see what happened. I disconnected the batteries to clear the computer. I know this wipes out the codes, but the light did not come back on when I started the truck. I'm sure whatever is causing the light is still there and that it will come back on. I'm totally stock with all the emissions crap still in place, unfortunately, and I'm fairly sure that something in that system is the culprit. Since I've still got a significant amount of the factory warranty left, I'm hesitant to do any of the mods (dpf delete, etc) before it expires. Do you think I'm correct in assuming it's something in the emissions system that is causing the light? Again, I know I need to get rid of the DPF, etc, but I can't (won't) until the factory warranty expires. But on the other hand, I don't want to have to take up residence at the dealer, although I will if necessary. BTW, I checked the fuel cap and that's not it. So, any suggestions what I should try next?

Wayne

Wayne

2008 F350 Lariat 4X2 CC 6.4L
dark blue over grey
totally stock and love it that way

Last edited by cp2146; 11-11-2011 at 06:28 AM.
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post #2 of 8 Old 11-11-2011, 06:24 AM
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Only thing you can really do is keep taking it back to ford every time the light comes on. Does the truck run fine when the light comes on? Could just be a glich in the computer its self. All this electrical crap that are on these trucks anymore

Jeremiah


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post #3 of 8 Old 11-11-2011, 06:36 AM Thread Starter
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Yes, it runs fine when the light is on. One thing it did do last night was go into a regen cycle when the light was on. That's what makes me believe it has got to be something in the emissions system causing it. Oh, another interesting thing...after I disconnected the batteries (reset the computer), my mileage went up. I was getting between 14 and 15 in town, and this morning on the way to work I got a little over 18. Same route, same driving conditions, same driving habits, but definitely an increase in fuel mileage.

Wayne

Wayne

2008 F350 Lariat 4X2 CC 6.4L
dark blue over grey
totally stock and love it that way

Last edited by cp2146; 11-11-2011 at 06:46 AM.
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post #4 of 8 Old 11-11-2011, 06:45 AM Thread Starter
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BTW, bentstroke, nice bird! I haven't been turkey hunting in a long, long time. I really need to go next season. The last one I saw in the woods was when I was sitting on a deer stand about 5 years ago. He landed in a tree about 20 yards from me. I was tempted, but with my luck, the game warden would have probably driven up about that time and nailed me for taking a bird out of season.

Wayne

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post #5 of 8 Old 11-11-2011, 07:39 AM
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I would say the best thing to do is take it straight to ford when it comes back on. I dont see why your mpg went up. I would for sure take it back and explain to them and make them fix it.

And thanks he is actually a young bird only a 8" beard. I have seen alot of turkey's this year while i deer hunt. Im about to go get a tag and start shooting turkey's

Jeremiah


Horsepower is like sex, once you get it you can't get enough of it

2008 6.4 with 200k and counting

5" FLO-PRO exhaust W/6" tip
AFE stage 2 CAI
Spartan tuner
PTP EGR Delete
coolant filter
CCV Mod
leveling kit
4in rear Blocks
20's W/35's
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post #6 of 8 Old 11-11-2011, 08:05 AM Thread Starter
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You're right. Make them fix it while it's still under warranty. I'm sure that's where I'll end up.

Deer season starts tomorrow where I hunt (Arkansas), but I'm not going to be able to make camp this year. Too many projects at home, but I'll be there in spirit. Actually, I'll be in that area over Thanksgiving so I may slip off to the woods then.

Wayne

2008 F350 Lariat 4X2 CC 6.4L
dark blue over grey
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post #7 of 8 Old 11-11-2011, 08:16 AM
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Bow season here in Ks start mid sept. so i been going out as much as possible and hope ford can fix the problem

Jeremiah


Horsepower is like sex, once you get it you can't get enough of it

2008 6.4 with 200k and counting

5" FLO-PRO exhaust W/6" tip
AFE stage 2 CAI
Spartan tuner
PTP EGR Delete
coolant filter
CCV Mod
leveling kit
4in rear Blocks
20's W/35's
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post #8 of 8 Old 11-11-2011, 09:05 AM Thread Starter
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Yeah, I'm sure they can.

I know lots of guys who bow hunt and they keep trying to get me to do it. LOL. I can barely hit anything with a gun. I'd only end up shooting myself in the foot with a bow.

Wayne

2008 F350 Lariat 4X2 CC 6.4L
dark blue over grey
totally stock and love it that way
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